Asaka House, a minimalist residence in Saitama prefecture, Japan, was designed by local interior designer Aso Toshihiro. Located in a quiet residential area, only 10 minutes from the nearest train station, the building is set in a parallelogram, slightly offset from the site. This allows the structure to avoid facing the Windows of external walls and adjacent buildings. Two triangular open Spaces on the site provide space for the surrounding environment, allowing light and air to flow through. These rooms are arranged from a closed room to an open room, with no corridor from the road side to the backyard side. Windows, doors and frames are not rectangular in shape but arched in shape, a departure from everyday standards of landscape and distribution.